Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Category
Mineral (Iron Ore)
Browse mineral (iron ore) specimens identified by the Rock Identifier community.
Specular Hematite (Polished Sphere)
Hematite (Alpha Fe2O3)
mineral
Hematite
Hematite, Iron(III) oxide (Fe2O3)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Limonite Pseudomorph after Pyrite
Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)
mineral
Ironstone (Limonitic Sandstone)
Ferruginous Sandstone (rich in Limonite: FeO(OH)·nH2O)
sedimentary
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Limonite (often after Hematite or Goethite)
Limonite (FeO(OH)·nH2O)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Laterite (iron-rich nodule, possibly Bauxite as a subtype)
Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)
Sedimentary
Limonite (Iron Stone Concretion)
Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O
mineral
Black Sand (Magnetite Sand)
Magnetite (Fe3O4)
mineral
Ironstone Concretion / Limonite Node
Goethite and Limonite (FeO(OH) nH2O)
sedimentary
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Ironstone Concretion (Siderite Nodules)
Siderite (FeCO3) in Mudstone or Sandstone matrix
sedimentary
Botryoidal Hematite (Iron Stone Conglomerate)
Hematite (Fe2O3) in sedimentary matrix
sedimentary
Ferruginous Sandstone (Gozzan/Ironstone)
Arenite with Limonite/Goethite cement (FeO(OH)·nH2O)
sedimentary
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Limonite and Goethite encrusted Chert/Ironstone
Hydrated Iron Oxide (FeO(OH)·nH2O) with cryptocrystalline Silica (SiO2)
sedimentary
Limonite (Gozzany Iron)
Limonite (FeO(OH)·nH2O)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Ferruginous Sandstone (Gritstone)
Clastic sedimentary rock with iron-rich cement (FeO(OH)·nH2O)
sedimentary
Specular Hematite with Pyrite
Iron Oxide (Fe2O3) with Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite (Iron Stone/Ocher)
Limonite (FeO(OH)·nH2O)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Magnetite (Small Granule)
Magnetite (Fe3O4)
mineral
Banded Iron Formation (BIF)
Banded Iron Formation
sedimentary
Yellow Ocher / Limonite
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Bauxite
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Ironstone Concretion
Siderite or Hematite Concretion
sedimentary
Hematite / Goethite (Iron Ore)
Iron Oxide (Fe2O3 / FeO(OH))
mineral
Hematite (Botryoidal/Kidney Ore)
Iron(III) oxide (Fe2O3)
mineral
Banded Iron Formation (BIF) / Tiger Iron variety
Banded Iron Formation (predominantly Hematite, Magnetite, and Chert/Quartz - SiO2 + Fe2O3)
sedimentary
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
mineral